GENERAL DESCRIPTION

The AD7911/AD79211 are 10-bit and 12-bit, high speed, low power, 2-channel successive approximation ADCs, respectively. The parts operate from a single 2.35 V to 5.25 V power supply and feature throughput rates of up to 250 kSPS. The parts contain a low noise, wide bandwidth track-and-hold amplifier, which can handle input frequencies in excess of 6 MHz.

FEATURES

Fast throughput rate: 250 kSPS

Specified for VDD of 2.35 V to 5.25 V

Low power:

4 mW typ at 250 kSPS with 3 V supplies

13.5 mW typ at 250 kSPS with 5 V supplies

Wide input bandwidth: 71 dB minimum SNR at 100 kHz input frequency

Flexible power/serial clock speed management

No pipeline delays

High speed serial interface: SPI?/QSPI?/MICROWIRE?/DSP compatible

Standby mode: 1 μA maximum

8-lead TSOT package

8-lead MSOP package

APPLICATIONS

Battery-powered systems:

Personal digital assistants

Medical instruments

Mobile communications

Instrumentation and control systems

Data acquisition systems

High speed modems

Optical sensors